.randCode{
    padding: 6px 12px;
  font-size: 18px;
  font-weight: 400;
  line-height: 34px;
}
.refresh{
  line-height: 34px;
  font-size: 18px;
  font-weight: bolder;
}
.refresh i:hover{
  font-size: 18px;
  cursor: pointer;
}
.form-control-feedback{
  right: 10px;
}
.tips{
  display: none;
  padding: 5px 20px;
  text-align: center;
  font-size: 16px;
  font-weight: 400;
  color: red;
  line-height: 30px;
}
.login-container{
  width: 320px;
  margin: 80px auto;
}